I bought a 23 year old used vinyl cutter for $80 bucks. The GCC Panther or as Sign Warehouse called it the Vinyl Express GRC-61 24" Servo driven plotter with Digital LCD display. No stand and the cutter did not have the USB to connect the cutter to my Windows 7 PC with Flexi 12 Pro, I had to use a USB Serial Adapter and connect the 9pin to the 28 pin on the plotter.
A few tips and tricks I remembered along the way, like hardware flow control and what it does to interact with the cutter.
**Keyspan High-Speed USB to Serial Adapter, PC & Mac, USB-A to DB9 RS232 Male, 3 Foot / 0.91 Meter Cable